VESSEL WORK SCOPE FOR SHUTDOWN

Why is vessel maintenance important during refinery shutdowns?

Refineries are complex systems that rely on multiple vessels to process crude oil into different products. However, these vessels are subject to frequent wear and tear due to the harsh operating conditions. To ensure their safe and efficient operation, routine maintenance is important during planned shutdowns. This period of downtime not only allows uninterrupted access to the vessels, but also presents the ideal opportunity to carry out thorough inspections, repairs and replacements to minimize potential risks and ensure optimal performance when the refinery restarts.

Maintenance Procedure

FOR- MECHANICAL ENGINEER, MECHANICAL SUPERVISOR, MECHANICAL FOREMAN AND MECHANICAL FITTER

JOB DESCRIPTION – OPENING, INTERNAL INSPECTION,VT, UT, PT, VIDEOSCOPY, CLEANING (HYDROJETTING), BOX-UP

Pre Shutdown Activities

1. Scaffolding to be erected if required
2. Insulation removal if required
3. Identify and tag the equipment
4.  Arrangement of blinds, gasket, tools, materials, exhaust fan or air mover 

Shutdown Activities

1. Obtain the work permit for job.
2. Install the required Blinds.
3. Open Manway covers.
4. Perform gas test and obtain confined space permit.
5. Internal Visual Inspection before cleaning.
6. Internal scaffolding as per recommendation.
7. Internal cleaning manual or by hydro-jetting as per instruction.
8. Cleaning Acceptance.
9. Internal Inspection by Process – VT,UT,PT.
10. Buffing of weld joints as recommended by Inspection team.
11. Perform repair if any.
12. Acceptance for box up.
13. Internal scaffolding removal.
14. Final cleaning.
15. Final acceptance for box-up.
16. Box up the manways.
17. De-blind and re-instating the connections & torqueing.

Post Turn Around Activities

1. Remove all blinds from location.
2. Re-install the insulation.
3. Remove all scaffolding by following safety.
4. Housekeeping to be done.

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